The Tab S8 Ultra is on a quarterly security update schedule. The last security update was 1 May so we are do for another this month. We are not getting monthly updates for security even though we may get random feature and bug fix updates as we did in the first month's of its release.
So at minimum we get quarterly updates with the possibility of some bug/feature updates in between.
Galaxy S21 Ultra 512g(VZW), Galaxy Book (original, VZW), Tab S8 Ultra, Tab S4, Galaxy Watch3(VZW), M8 Smart Monitor